Processed Food Lowers IQ in Children, Study Finds


The standard American diet is rife with processed food, so much so that more than 100 million Americans are either diabetic or pre-diabetic.  While the most commonly known results is a host of physical ailments, what’s lesser known is the effect of processed food on IQ, especially among children.

A study published in the Journal of Epidemiology and Community Health proved a conclusive link between consumption of processed food and lowered IQ.  The researchers followed 14,000 children over five and a half years, tracking their diet through questionnaires, at intervals of age three, four, seven, and eight and a half years.  The study found that those with a diet high in processed foods had notably lower IQs by age eight than those who had diets higher in nutrient-dense foods.

Of particular interest, each point increase in the study’s dietary pattern score, which measured processed fat intake, resulted in a 1.67 reduction in IQ.

According to the authors,

“This suggests that any cognitive/behavioural effects relating to eating habits in early childhood may well persist into later childhood, despite any subsequent changes to dietary intake.”






Jonathan Cho